.enviomaterial {
}

    .enviomaterial .textos {
        width: 62%;
        margin-right: 30px;
    }

    .enviomaterial .aviso {
        width: 50%;
    }

    .enviomaterial .box {
        border-style: solid;
    border-color: inherit;
    border-width: 1px;
    padding: 30px;
width: 533px;
    margin-top: 0px;
}

        .enviomaterial .box h4 {
            background-color: red;
            color: #fff;
            padding: 15px;
            margin-left: -20px;
            margin-right: -20px;
            margin-top: -20px;
            text-transform: uppercase;
        }

.container {
    width: 100%;
    max-width: 100%;
}